Monthly outlook for Whitefish Bay, WI: average high 74.3°, average low 64.1°. That is 1.8° below the climate normal for August. Precipitation is expected on 3 days (about 2.3 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 August (85.2°), the coolest 20 August (58.5°).
74.3°/64.1°
Average high / low
−1.8°
Below normal
3 / 5
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
76.5°
77.7°
-0.7°
19 August – 28 August
70.6°
77.5°
-3.8°
29 August – 7 September
at normal
75.8°
—
August records over 66 years
99.3°23 August 2023All-time high
49.5°28 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Milwaukee (5 mi).
Mon, 1085° / 70°0.04
85 °
Whitefish Bay, Monday, 10 August
Light rain. High 85°, low 70°.
Pressure29.94 inHg
Wind4.1 mph E
Humidity78%
Visibility6.2 mi
Dew point68°
Tue, 1175° / 68°0.93
75 °
Whitefish Bay, Tuesday, 11 August
Heavy rain. High 75°, low 68°.
Pressure29.80 inHg
Wind1.3 mph N
Humidity86%
Visibility6.2 mi
Dew point68°
Wed, 1279° / 67°0
79 °
Whitefish Bay, Wednesday, 12 August
Overcast. High 79°, low 67°.
Pressure29.85 inHg
Wind3.8 mph N
Humidity74%
Visibility6.2 mi
Dew point66°
Thu, 1371° / 64°0
71 °
Whitefish Bay, Thursday, 13 August
Overcast. High 71°, low 64°.
Pressure30.06 inHg
Wind13.4 mph NE
Humidity57%
Visibility—
Dew point52°
Fri, 1473° / 60°0
73 °
Whitefish Bay, Friday, 14 August
Clear. High 73°, low 60°.
Pressure30.12 inHg
Wind8.4 mph SW
Humidity52%
Visibility—
Dew point53°
Sat, 1572° / 64°0
72 °
Whitefish Bay, Saturday, 15 August
Overcast. High 72°, low 64°.
Pressure30.30 inHg
Wind8.6 mph E
Humidity59%
Visibility—
Dew point56°
Sun, 1673° / 62°0
73 °
Whitefish Bay, Sunday, 16 August
Overcast. High 73°, low 62°.
Pressure30.15 inHg
Wind8.3 mph SE
Humidity65%
Visibility—
Dew point58°
Mon, 1778° / 65°0
78 °
Whitefish Bay, Monday, 17 August
Partly cloudy. High 78°, low 65°.
Pressure30.03 inHg
Wind7 mph SW
Humidity63%
Visibility—
Dew point62°
Tue, 1883° / 69°0.03
83 °
Whitefish Bay, Tuesday, 18 August
Light rain. High 83°, low 69°.
Pressure29.94 inHg
Wind13.6 mph SW
Humidity64%
Visibility—
Dew point66°
Wed, 1973° / 64°0
73 °
Whitefish Bay, Wednesday, 19 August
Overcast. High 73°, low 64°.
Pressure29.88 inHg
Wind19.9 mph NW
Humidity58%
Visibility—
Dew point56°
Thu, 2069° / 59°0
69 °
Whitefish Bay, Thursday, 20 August
Overcast. High 69°, low 59°.
Pressure30.06 inHg
Wind14.4 mph N
Humidity50%
Visibility—
Dew point48°
Fri, 2169° / 61°0
69 °
Whitefish Bay, Friday, 21 August
Clear. High 69°, low 61°.
Pressure30.12 inHg
Wind9.1 mph N
Humidity59%
Visibility—
Dew point53°
Sat, 2266° / 61°0.39
66 °
Whitefish Bay, Saturday, 22 August
Rain. High 66°, low 61°.
Pressure29.91 inHg
Wind14 mph SE
Humidity91%
Visibility—
Dew point59°
Sun, 2376° / 64°0.01
76 °
Whitefish Bay, Sunday, 23 August
Light rain. High 76°, low 64°.
Pressure29.85 inHg
Wind16.1 mph W
Humidity57%
Visibility—
Dew point57°
Mon, 2470° / 64°0
70 °
Whitefish Bay, Monday, 24 August
Overcast. High 70°, low 64°.
Pressure30.03 inHg
Wind7.5 mph E
Humidity72%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 66°0.09
78 °
Whitefish Bay, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0.09 in
Chance of precipitation27%
Record high92° (2021)
Record low53° (2025)
Wed, 2678° / 66°0.16
78 °
Whitefish Bay, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0.16 in
Chance of precipitation40%
Record high93° (2020)
Record low52° (2025)
Thu, 2778° / 66°0.11
78 °
Whitefish Bay, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low66°
Average precipitation0.11 in
Chance of precipitation35%
Record high94° (2024)
Record low55° (2025)
Fri, 2878° / 65°0.12
78 °
Whitefish Bay, Friday, 28 August
Climate normal for this date — 60-year average.
Average high78°
Average low65°
Average precipitation0.12 in
Chance of precipitation38%
Record high93° (2021)
Record low49° (1986)
Sat, 2977° / 65°0.1
77 °
Whitefish Bay, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low65°
Average precipitation0.1 in
Chance of precipitation27%
Record high89° (2022)
Record low51° (1965)
Sun, 3076° / 65°0.07
76 °
Whitefish Bay, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low65°
Average precipitation0.07 in
Chance of precipitation33%
Record high89° (2013)
Record low53° (2023)
Mon, 3176° / 64°0.04
76 °
Whitefish Bay, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.04 in
Chance of precipitation13%
Record high87° (2012)
Record low51° (2009)
Tue, 0176° / 64°0.09
76 °
Whitefish Bay, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high89° (2022)
Record low51° (2009)
Wed, 0276° / 64°0.05
76 °
Whitefish Bay, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.05 in
Chance of precipitation28%
Record high89° (2011)
Record low50° (2017)
Thu, 0376° / 64°0.09
76 °
Whitefish Bay, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low64°
Average precipitation0.09 in
Chance of precipitation27%
Record high94° (2023)
Record low50° (1974)
Fri, 0475° / 63°0.07
75 °
Whitefish Bay, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.07 in
Chance of precipitation28%
Record high91° (2023)
Record low47° (2025)
Sat, 0575° / 62°0.08
75 °
Whitefish Bay, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.08 in
Chance of precipitation27%
Record high89° (2023)
Record low48° (2019)
Sun, 0675° / 63°0.08
75 °
Whitefish Bay, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low63°
Average precipitation0.08 in
Chance of precipitation35%
Record high89° (1990)
Record low48° (2017)
Mon, 0775° / 62°0.1
75 °
Whitefish Bay, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low62°
Average precipitation0.1 in
Chance of precipitation32%
Record high88° (1960)
Record low46° (2025)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Whitefish Bay, WI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Whitefish Bay, WI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.